I’m most likely going to need to see the form and the view(s) associated with this to be able to offer any suggestions.
The event field in EventData should be rendered by default as a select widget.
If you want the ability to select / add, I know there are multiple ways of doing it.
- The Select2 module allows for that feature. (Along with its companion django-select2.)
- The Django admin has the little “+” icon next to the select box for bring up a modal form for adding a new entry.
- You could use the datalist feature as well.